feat: Use test name for dir when running tests #16121
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rustbot
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A-documenting-cargo-itself
weihanglo
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Oct 15, 2025
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I'd like to call out @ehuss's comment #11738 (comment), though personally fine with this PR.
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Not sure how I missed this when I was going back through that PR. Given that concern, it might make sense for me to bring this up in the next team meeting.
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There is some documentation in https://github.com/rust-lang/cargo/blob/HEAD/src/doc/contrib/src/tests/writing.md that would need to be updated. |
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In #11738, I made a test's "sandbox" folder based on its name instead of a generated number, which can change from run to run. #11812 reverted this change due to problems with path length limits on Windows. After getting frustrated with the generated folders while trying to debug a test recently, I decided that it would be a good idea to bring back name-based folders to platforms that support them.